a:link { color:black; text-decoration:none; }
a:visited { color:black; text-decoration:none; }
a:hover { color:black; text-decoration:underline; }

#desktop {
display:none; }

@media only screen and (min-width: 800px) {

#mobil {
display:none; }

#desktop {
display:block; }

}

/* Nur Index */
#zugangsdaten {
  border-width:2px;
  border-style:solid;
  /* border-color:gray; */
  border-color:red;
  margin:5px;
}

/* Alle Seiten */
body {
  margin-top: 0px;
  /* margin-left: 10px; */
  /* margin-right: 10px; */
  background-image: url("background.png");
}

/* Alle Seiten - Topper */
#menu {
  margin-top: 0px;
  width: 100%;
  border: 0px;
}

/* Name.php */
#inhalt {
  width:687px;
  border-width:2px;
  border-style:solid;
  border-color:black;
  border-top-width:0px;
  border-bottom-width:0px;
}

/* Name.php */
#navigation {
  width:687px;
  border-width:2px;
  border-style:solid;
  border-color:black;
  border-top-width:0px;
  border-bottom-width:0px;
}

/* Name.php */
#links {
  width:195px;
  border-width:2px;
  border-style:solid;
  border-color:black;
  border-top-width:0px;
  border-bottom-width:0px;
}

/* Name.php */
#ueberschrift_links {
  width:195px;
  border-width:2px;
  border-style:solid;
  border-color:black;
  border-top-width:0px;
  border-bottom-width:1px;
}

/* zentrieren */
#zentrieren {
  display: flex;
  align-items: center;
  justify-content: center;
}